Draw-bar for harrows.



No. 790,444. PATENTED MAY 23, 1905. v

B. P. LYNDS.

` DRAW BAR POR HARROWS..

APPLICATION FILED FEB. 9, -1905.

- Svi/nemo@ No. .sd-144.

UNITED STATES Patented May 23, 1905.

BYRON P. LYNDS, OF SANDWICH, ILLINOIS.

DRAW-BAR FOR HARROWS.

SPECIFICATION forming part of' Letters Patent'No 790,444, dated May 23, 1905. Application led February 9, 1905. Serial No. 244,936.

' T0 @ZZ whom it may concern:

`rows; and I do declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use' the same. f

My invention is an improved draw-bar for sectional harrows adapted to be folded to reduce length, so that it may readily pass between tlie posts of a gate and may also be readilyT drawn on narrow roads and lanes when the harrow is folded andv it consists in the construction, combination, and arrangement of devices hereinafter described and claimed.

In the accompanying drawings, Figure l is a top plan view of a folding harrow draw-bar embodying my improvements, showing the same extended, the front ends of the harrowsection connected to the. various portions of the draw-bar being indicated in dotted lines. Fig. 2 is a side elevation of the same, showing one of the draw-bar sections folded on the intermediate section; and Fig. 3 is a detail perspective view showing one of the joints beween the members or sections of the draw- My improved draw-bar is here shown as adapted for use in connection with a foursection harrow, and comprises an intermediate section 1 and end sections 2. On the front and rear sides of the intermediate section and end sections, at the contiguous ends thereof, are plates 3 4, which are bolted thereto and are provided at their inner upper cor-- ners with upwardly-proj ecting lugs 5 6, which are respectively recessed on their inner and outer sides, as at 7 8. Said recesses 7 8 form shoulders 9 10 on the upper sides of the said' lugs, and shoulders 11 are formed on the under sides of the said lugs at the contiguous ends of the plates 3 4 and flush with the contiguous ends of the intermediate and end sections ofthe draw-bar. The lugs of the plates are disposed in overlapping relation, and the lugs of the respective lates are connected togetheil by a pivot-bo t l2, whereby the end and intermediate sections of the draw-bar are hinged or pir.' otally connected together to enable the end sections to be folded over the intermediate section or to be extended therefrom.

When the end sections are folded over the intermediate section, the lugs 5 6, respectively, engage the shoulders 10 9 and coact with the pivot-bolt 12 to support and maintain the end sections above and spaced from the intermediate section and substantially parallel with relation thereto to prevent the devices which are employed for connecting the harrow-sections to the sections of the draw-bar from coming in contact with one another. When the end sections are extended from and in line with the intermediate section, as when the harrow-sections are disposed in position for operation, the shoulders 1l of the plates 3 4 are in mutual contact and y serve, in connection with the pivot-bolt l2, to keep the end sections and the intermediate section in a common horizontal plane. It will be observed that the pivot-bolts or pintles 12 are directly above the joints between the intermediate and end sections and that the plates 3 4 are bolted to the front and rear sides of the intermediate and end sections and serye not only to act as hinges between the said sections, but also, by reason of the overlapping relation of their respective lugs or ears, to act as braces between the intermediate and end sections, so as to prevent the end sections from becoming angularly disposed backwardly from and with relation to the intermediate section and to also relieve the pivot-bolts orbraces l2 of undue lateral stress. l

To the center of the intermediate section is pivotally connected a clevis 13, which extends forwardly therefrom. One of the bolts 14 which secure each pair of the plates 3 to one end of the' intermediate section is provided at its front end with an eye 14.

Link-rods 15 have their outer ends hooked to the eyes of the bolts and their inner ends connected t a ring 16, to which the doubletree may be connected in the usual manner. A link 17 connects the said ring and the clevis 13. lt will be observed that by thus connecting some of the draw-links to some of the bolts which secure the hinge-plates to the intermediate section the draft stress is applied to the hinge-plates on the rear side of the intermediate section and is caused to counteract the stress exerted on the said hinge-plates by the drag of the end sections of the draw-bar.

It will be understood that when the harrow is at work and the sections thereof are disposed side by side the end sections of the draw-bar will be extended from the intermediate section thereof and that when it is necessary to draw the harrow through a gateway or other narrow place the outer harrowseetions will be folded over the intermediate section, and the ends of the draw-bar will be folded over the intermediate section thereof.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

`Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention. y

Having thus described my invention,what

I claim as new, and desire to secure by Letters Patent, is-

1. A harrow draw-bar comprising a plurality of sections disposed end to end, plates` on the front and rear sides of the said sections at the contiguous ends thereof and formed with overlapping, upwardly-cxtend ed ears, and laterally and oppositely extending shoulders, for the purpose set forth, and a pivot connecting the said ears of the rcspective hinge-plates and disposed above the joints between the draw-bar sections, sub stantially as described.

2. A sectional foldable draw-bar for harrows, comprising an intermediate section, end sections, hinge connections between the intermediate and end sections and including plates to bear against the front and rear sides of said sections, bolts securing said hinge-plates to the said sections, certain of the bolts which secure certain of the said plates to the intermediate section having eyes at their front ends, and draft-links con nected to the eyes of the said'bolts, to apply draft stress to the hinge-plates on the rear side of the intermediate section,for the purpose set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing` witnesses.

BYRON P, LYNDS.

Witnesses:

HENRY LoUcKs, H. F. SEDGWICK. 

